/* 
 * 11/19/04	 1.0 moved to LGPL.
 * 
 * 12/12/99  Initial Version based on FileObuffer.	mdm@techie.com.
 * 
 * FileObuffer:
 * 15/02/99  Java Conversion by E.B ,javalayer@javazoom.net
 *
 *-----------------------------------------------------------------------
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Library General Public License as published
 *   by the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU Library General Public License for more details.
 *
 *   You should have received a copy of the GNU Library General Public
 *   License along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *----------------------------------------------------------------------
 */

package javazoom.jl.decoder;

/**
 * The <code>SampleBuffer</code> class implements an output buffer that provides
 * storage for a fixed size block of samples.
 */
public class SampleBuffer extends Obuffer {
	private short[] buffer;
	private int[] bufferp;
	private int channels;
	private int frequency;

	/**
	 * Constructor
	 */
	public SampleBuffer(int sample_frequency, int number_of_channels) {
		buffer = new short[OBUFFERSIZE];
		bufferp = new int[MAXCHANNELS];
		channels = number_of_channels;
		frequency = sample_frequency;

		for (int i = 0; i < number_of_channels; ++i)
			bufferp[i] = (short) i;

	}

	public int getChannelCount() {
		return this.channels;
	}

	public int getSampleFrequency() {
		return this.frequency;
	}

	public short[] getBuffer() {
		return this.buffer;
	}

	public int getBufferLength() {
		return bufferp[0];
	}

	/**
	 * Takes a 16 Bit PCM sample.
	 */
	public void append(int channel, short value) {
		buffer[bufferp[channel]] = value;
		bufferp[channel] += channels;
	}

	public void appendSamples(int channel, float[] f) {
		int pos = bufferp[channel];

		short s;
		float fs;
		for (int i = 0; i < 32;) {
			fs = f[i++];
			fs = (fs > 32767.0f ? 32767.0f : (fs < -32767.0f ? -32767.0f : fs));

			s = (short) fs;
			buffer[pos] = s;
			pos += channels;
		}

		bufferp[channel] = pos;
	}

	/**
	 * Write the samples to the file (Random Acces).
	 */
	public void write_buffer(int val) {

		// for (int i = 0; i < channels; ++i)
		// bufferp[i] = (short)i;

	}

	public void close() {
	}

	/**
	 *
	 */
	public void clear_buffer() {
		for (int i = 0; i < channels; ++i)
			bufferp[i] = (short) i;
	}

	/**
	 *
	 */
	public void set_stop_flag() {
	}
}
